4005001

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4001}}^1$

素因数の和:4032

約数の個数: 16

約数和(自身を含む): 5378688

約数和(自身を除く): 1373687

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 4001, 28007, 44011, 52013, 308077, 364091, 572143, 4005001]

約数ペア:

[(1, 4005001), (7, 572143), (11, 364091), (13, 308077), (77, 52013), (91, 44011), (143, 28007), (1001, 4001)]